Observed this bat flying over the water and diving down into the water. At one point he went into the water and swam across the water to the opposite bank of the river. So strange to see a bat in the middle of the day!

This gelatinous strand was found attached to the underside of a floating raft. Strand was about 20 cm long, and forms a loop when removed from raft. Each green dot is about 1 mm. Under a microscope, this "algae" has eyes. So some kind of insect eggs? Best guess is chironomids based on a web page I saw.

Mag. 100x (1), 400x (2-4)
Very large amoeba with a hearty appetite; having ingested 2, large pennate diatoms (both Pinnularia?). Smaller diatoms and crystals are also visible in the streaming cytoplasm. Go here for 2 short videos at 100x and 400x: https://youtu.be/k1TUZVLZvEM and https://youtu.be/SZ-1WE9Dnpw.

• A pond-side water sample was taken on 12/27/2021 using a 10µ dip net. About 1/4" of ice had to be broken and pushed aside to access the water. Air temp. 36°F.

This species is a "gulper" of filamentous blue-green algae, and this individual seems to have had the protist equivalent of Thanksgiving dinner.

Here is an article which describes the implausible P. dubious eating process:
http://www.protistology.jp/journal/jjp35/11-Hausmann.pdf

According to the article, the giant strand of alga will be broken down within an hour. Unfortunately, I didn't follow the process that long.